LCCR3_PixClkDiv
fbi->reg_lccr3 = fbi->lccr3 | LCCR3_PixClkDiv(__smart_timing(t4, lclk));
fbi->reg_lccr3 |= LCCR3_PixClkDiv(pcd);
LCCR3_PixClkDiv(pcd);
new_regs.lccr3 = LCCR3_PixClkDiv(pcd) | fbi->inf->lccr3 |
fbi->reg_lccr3 = (fbi->reg_lccr3 & ~0xff) | LCCR3_PixClkDiv(pcd);